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Performance Counters: Difference between revisions
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* RDPMC instruction: http://www.x86.org/secrets/opcodes/rdpmc.htm | * RDPMC instruction: http://www.x86.org/secrets/opcodes/rdpmc.htm | ||
* FreeBSD includes libpmc as part of the base system | * FreeBSD includes libpmc as part of the base system | ||
* On Linux, we have libpfm | * On Linux, we have [http://perfmon2.sourceforge.net/ libpfm] | ||
* This is the preferred way we get at TSC (TSC has fallen out of favor, though) | * This is the preferred way we get at TSC (TSC has fallen out of favor, though) | ||
* Collectors include [[oprofile]] and [[perf]]. | * Collectors include [[oprofile]] and [[perf]]. | ||
Revision as of 10:16, 19 September 2009
- Normally driven through MSRs
- RDPMC instruction: http://www.x86.org/secrets/opcodes/rdpmc.htm
- FreeBSD includes libpmc as part of the base system
- On Linux, we have libpfm
- This is the preferred way we get at TSC (TSC has fallen out of favor, though)
- Collectors include oprofile and perf.
